SOLUTION: z3 + 3z2 + 7z + 21

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: z3 + 3z2 + 7z + 21      Log On


   

Question 338517: z3 + 3z2 + 7z + 21
Found 2 solutions by fractalier, unlockmath:
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Just solved this one...my last solution...by grouping...

Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
You didn't say what you wanted done with this z3 + 3z2 + 7z + 21 but I'll assume you want it factored. Right?
z3 + 3z2 + 7z + 21
First we can rewrite it as:
z^2(z + 3) + 7(z + 3)
Now we can rewrite it as:
(z+3)(z^2+7)
There we go. Make sense?
RJ
www.math-unlock.com